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SHEBOYGAN, WI - AUGUST 13: Tiger Woods of the United States watches a bunker shot on the 18th hole during the first round of the 2015 PGA Championship at Whistling Straits on August 13, 2015 in Sheboygan, Wisconsin. (Photo by Tom Pennington/Getty Images)

SHEBOYGAN, WI - AUGUST 13:  Tiger Woods of the United States watches a bunker shot on the 18th hole during the first round of the 2015 PGA Championship at Whistling Straits on August 13, 2015 in Sheboygan, Wisconsin.  (Photo by Tom Pennington/Getty Images)